Configuration instructions¶
Installing Weblate¶
Depending on your setup and experience, choose an appropriate installation method for you:
-
Installing using Docker, recommended for production setups.
-
Virtualenv installation, recommended for production setups:
Installing from sources, recommended for development.
Architecture overview¶
- Web server
Handling incoming HTTP requests, Serving static files.
- Celery workers
Background tasks using Celery are executed here.
Depending on your workload, you might want to customize the number of workers.
Use dedicated node when scaling Weblate horizontally.
- WSGI server
A WSGI server serving web pages to users.
Use dedicated node when scaling Weblate horizontally.
- Database
PostgreSQL database server for storing all the content, see Database setup for Weblate.
Use dedicated database node for sites with hundreds of millions of hosted words.
- Redis
Redis server for cache and tasks queue, see Background tasks using Celery.
Use dedicated node when scaling Weblate horizontally.
- File system
File system storage for storing VCS repositories and uploaded user data. This is shared by all the processes.
Use networked storage when scaling Weblate horizontally.
- E-mail server
SMTP server for outgoing e-mail, see Configuring outgoing e-mail. It can be provided externally.
Hint
Installing using Docker includes PostgreSQL and Redis, making the installation easier.
Software requirements¶
Operating system¶
Weblate is known to work on Linux, FreeBSD and macOS. Other Unix like systems will most likely work too.
Weblate is not supported on Windows. But it may still work and patches are happily accepted.
See also
Architecture overview describes overall Weblate architecture and required services.
Python dependencies¶
Weblate is written in Python and supports Python
3.11 or newer. You can install dependencies using pip or from your
distribution packages, full list is available in requirements.txt.
Most notable dependencies:
- Django
- Celery
- Translate Toolkit
- translation-finder
- Python Social Auth
- Django REST Framework
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MySQL or MariaDB, see Database setup for Weblate |
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When installing using pip, you can directly specify desired features when installing:
uv pip install "weblate[Postgres,Amazon,SAML]"
Or you can install Weblate with all optional features:
uv pip install "weblate[all]"
Or you can install Weblate without any optional features:
uv pip install weblate
Other system requirements¶
The following dependencies have to be installed on the system:
Git- Pango, Cairo and related header files and GObject introspection data
https://cairographics.org/, https://www.gtk.org/docs/architecture/pango, see Pango and Cairo
git-review(optional for Gerrit support)git-svn(optional for Subversion support)tesseract(needed only if tesserocr binary wheels are not available for your system)licensee(optional for detecting license when creating component)
Build-time dependencies¶
To build some of the Python dependencies you might need to install their
dependencies. This depends on how you install them, so please consult
individual packages for documentation. You won’t need those if using prebuilt
Wheels while installing using pip or when you use distribution packages.
Pango and Cairo¶
Weblate uses Pango and Cairo for rendering bitmap widgets (see Promoting the translation) and rendering checks (see Managing fonts). To properly install Python bindings for those you need to install system libraries first - you need both Cairo and Pango, which in turn need GLib. All those should be installed with development files and GObject introspection data.
Hardware requirements¶
Weblate should run on any contemporary hardware without problems, the following is the minimal configuration required to run Weblate on a single host (Weblate, database and web server):
3 GB of RAM
2 CPU cores
1 GB of storage space
Note
Actual requirements for your installation of Weblate vary heavily based on the size of the translations managed in it.
Memory usage¶
The more memory the better - it is used for caching on all levels (file system, database and Weblate). For hundreds of translation components, at least 4 GB of RAM is recommended.
Hint
For systems with less memory than recommended, Single-process Celery setup is recommended.
CPU usage¶
Many concurrent users increase the amount of needed CPU cores.
Storage usage¶
The typical database storage usage is around 300 MB per 1 million hosted words.
Storage space needed for cloned repositories varies, but Weblate tries to keep their size minimal by doing shallow clones.
Nodes¶
For small and medium-sized sites (millions of hosted words), all Weblate components (see Architecture overview) can be run on a single node.
When you grow to hundreds of millions of hosted words, it is recommended to have a dedicated node for database (see Database setup for Weblate).
Verifying release signatures¶
Weblate release are cryptographically signed using Sigstore signatures. The signatures are attached to the GitHub release.
The verification can be performed using sigstore package. The following example verifies signature of the 5.4 release:
sigstore verify github \
--cert-identity https://github.com/WeblateOrg/weblate/.github/workflows/setup.yml@refs/tags/weblate-5.4 \
--bundle Weblate-5.4-py3-none-any.whl.sigstore \
Weblate-5.4-py3-none-any.whl
Filesystem permissions¶
The Weblate process needs to be able to read and write to the directory where
it keeps data - DATA_DIR. All files within this directory should be
owned and writable by the user running all Weblate processes (typically WSGI and Celery, see Running server and Background tasks using Celery).
The default configuration places them in the same tree as the Weblate sources, however
you might prefer to move these to a better location such as:
/var/lib/weblate.
Weblate tries to create these directories automatically, but it will fail when it does not have permissions to do so.
You should also take care when running Management commands, as they should be ran under the same user as Weblate itself is running, otherwise permissions on some files might be wrong.
In the Docker container, all files in the /app/data volume have to be
owned by the weblate user inside the container (UID 1000).
See also
Database setup for Weblate¶
It is recommended to run Weblate with a PostgreSQL database server.
PostgreSQL 12 and higher is supported. PostgreSQL 15 or newer is recommended.
MySQL and MariaDB is supported, but not recommended for new installs.
Note
No other database servers are currently supported, but support for other Django supported databases should be possible to implement.
Database connections¶
In the default configuration, each Weblate process keeps a persistent
connection to the database. Persistent connections improve Weblate
responsiveness, but might require more resources for the database server.
Please consult CONN_MAX_AGE and
Persistent connections for more info.
Weblate needs at least the following number of connections:
\((4 \times \mathit{nCPUs}) + 2\) for Celery processes
\(\mathit{nCPUs} + 1\) for WSGI workers
This applies to Docker container defaults and example configurations provided in this documentation, but the numbers will change once you customize the amount of WSGI workers or adjust parallelism of Celery.
The actual limit for the number of database connections needs to be higher to account following situations:
Management commands need their connection as well.
If case process is killed (for example by OOM killer), it might block the existing connection until timeout.
PostgreSQL¶
PostgreSQL is usually the best choice for Django-based sites. It’s the reference database used for implementing Django database layer.
Note
Weblate uses trigram extension which has to be installed separately in some
cases. Look for postgresql-contrib or a similarly named package.
See also
Creating a database in PostgreSQL¶
It is usually a good idea to run Weblate in a separate database, and separate user account:
# If PostgreSQL was not installed before, set the main password
sudo -u postgres psql postgres -c "\password postgres"
# Create a database user called "weblate"
sudo -u postgres createuser --superuser --pwprompt weblate
# Create the database "weblate" owned by "weblate"
sudo -u postgres createdb -E UTF8 -O weblate weblate
Hint
If you don’t want to make the Weblate user a superuser in PostgreSQL, you can omit that. In that case you will have to perform some of the migration steps manually as a PostgreSQL superuser in schema Weblate will use:
CREATE EXTENSION IF NOT EXISTS pg_trgm;
CREATE EXTENSION IF NOT EXISTS btree_gin;
Configuring Weblate to use PostgreSQL¶
The settings.py snippet for PostgreSQL:
DATABASES = {
"default": {
# Database engine
"ENGINE": "django.db.backends.postgresql",
# Database name
"NAME": "weblate",
# Database user
"USER": "weblate",
# Configures name of the PostgreSQL role to alter during the database migration
# "ALTER_ROLE": "weblate",
# Database password
"PASSWORD": "password",
# Set to empty string for localhost
"HOST": "database.example.com",
# Set to empty string for default
"PORT": "",
# Persistent connections
"CONN_MAX_AGE": None,
"CONN_HEALTH_CHECKS": True,
}
}
The database migration performs ALTER ROLE on the database role used
by Weblate. In most cases, the name of the role matches the username. In more
complex setups the role name is different from the username, and you will get an error
about non-existing role during the database migration
(psycopg2.errors.UndefinedObject: role "weblate@hostname" does not exist).
This is known to happen with Azure Database for PostgreSQL, but it’s not
limited to this environment. Please set ALTER_ROLE to change the name of the
role Weblate should alter during the database migration.
See also
MySQL and MariaDB¶
Warning
While MySQL and MariaDB support is still maintained in Weblate, our primary focus is PostgreSQL. It is recommended to use PostgreSQL for new installs, and to migrate existing installs to PostgreSQL, see Migrating from other databases to PostgreSQL.
Some Weblate features will perform better with PostgreSQL. This includes searching and translation memory, which both utilize full-text features in the database and PostgreSQL implementation is superior.
Weblate can be also used with MySQL or MariaDB, please see MySQL notes and MariaDB notes for caveats using Django with those. Because of the limitations it is recommended to use PostgreSQL for new installations.
Weblate requires MySQL at least 8 or MariaDB at least 10.4.
Following configuration is recommended for Weblate:
Use the
utf8mb4charset to allow representation of higher Unicode planes (for example emojis).Configure the server with
innodb_large_prefixto allow longer indices on text fields.Set the isolation level to
READ COMMITTED.The SQL mode should be set to
STRICT_TRANS_TABLES.
MySQL 8.x, MariaDB 10.5.x or newer have reasonable default configuration so that no server tweaking should be necessary and all what is needed can be configured on the client side.
Below is an example /etc/my.cnf.d/server.cnf for a server with 8 GB of
RAM. These settings should be sufficient for most installs. MySQL and MariaDB
have tunables that will increase the performance of your server that are
considered not necessary unless you are planning on having large numbers of
concurrent users accessing the system. See the various vendors documentation on
those details.
It is absolutely critical to reduce issues when installing that the setting
innodb_file_per_table is set properly and MySQL/MariaDB restarted before
you start your Weblate install.
[mysqld]
character-set-server = utf8mb4
character-set-client = utf8mb4
collation-server = utf8mb4_unicode_ci
datadir=/var/lib/mysql
log-error=/var/log/mariadb/mariadb.log
innodb_large_prefix=1
innodb_file_format=Barracuda
innodb_file_per_table=1
innodb_buffer_pool_size=2G
sql_mode=STRICT_TRANS_TABLES
Hint
In case you are getting #1071 - Specified key was too long; max key length
is 767 bytes error, please update your configuration to include the innodb
settings above and restart your install.
Hint
In case you are getting #2006 - MySQL server has gone away error,
configuring CONN_MAX_AGE might help.
See also
Configuring Weblate to use MySQL/MariaDB¶
The settings.py snippet for MySQL and MariaDB:
DATABASES = {
"default": {
# Database engine
"ENGINE": "django.db.backends.mysql",
# Database name
"NAME": "weblate",
# Database user
"USER": "weblate",
# Database password
"PASSWORD": "password",
# Set to empty string for localhost
"HOST": "127.0.0.1",
# Set to empty string for default
"PORT": "3306",
# In case you wish to use additional
# connection options
"OPTIONS": {},
}
}
You should also create the weblate user account in MySQL or MariaDB before
you begin the install. Use the commands below to achieve that:
GRANT ALL ON weblate.* to 'weblate'@'localhost' IDENTIFIED BY 'password';
FLUSH PRIVILEGES;
See also
Other configurations¶
Configuring outgoing e-mail¶
Weblate sends out e-mails on various occasions - for account activation and on various notifications configured by users. For this it needs access to an SMTP server.
The mail server setup is configured using these settings:
EMAIL_HOST, EMAIL_HOST_PASSWORD,
EMAIL_USE_TLS, EMAIL_USE_SSL,
EMAIL_HOST_USER and EMAIL_PORT. Their
names are quite self-explanatory, but you can find more info in the
Django documentation.
Hint
In case you get error about not supported authentication (for example
SMTP AUTH extension not supported by server), it is most likely caused
by using insecure connection and server refuses to authenticate this way.
Try enabling EMAIL_USE_TLS in such case.
Running behind reverse proxy¶
Several features in Weblate rely on being able to get client IP address. This includes Rate limiting, Spam protection or Audit log.
In default configuration Weblate parses IP address from REMOTE_ADDR which
is set by the WSGI handler.
In case you are running a reverse proxy, this field will most likely contain
its address. You need to configure Weblate to trust additional HTTP headers and
parse the IP address from these. This can not be enabled by default as it would
allow IP address spoofing for installations not using a reverse proxy. Enabling
IP_BEHIND_REVERSE_PROXY might be enough for the most usual setups,
but you might need to adjust IP_PROXY_HEADER and
IP_PROXY_OFFSET as well.
Another thing to take care of is the Host header. It should match
to whatever is configured as SITE_DOMAIN. Additional configuration
might be needed in your reverse proxy (for example use ProxyPreserveHost On
for Apache or proxy_set_header Host $host; with nginx).
HTTP proxy¶
Weblate does execute VCS commands and those accept proxy configuration from
environment. The recommended approach is to define proxy settings in
settings.py:
import os
os.environ["http_proxy"] = "http://proxy.example.com:8080"
os.environ["HTTPS_PROXY"] = "http://proxy.example.com:8080"
See also
Adjusting configuration¶
See also
Copy weblate/settings_example.py to weblate/settings.py and
adjust it to match your setup. You will probably want to adjust the following
options:
ADMINS
List of site administrators to receive notifications when something goes wrong, for example notifications on failed merges, or Django errors.
Contact form sends e-mail on these as well unless
ADMINS_CONTACTis configured.See also
ALLOWED_HOSTS
You need to set this to list the hosts your site is supposed to serve. For example:
ALLOWED_HOSTS = ["demo.weblate.org"]Alternatively you can include wildcard:
ALLOWED_HOSTS = ["*"]
SESSION_ENGINE
Configure how your sessions will be stored. In case you keep the default database backend engine, you should schedule: weblate clearsessions to remove stale session data from the database.
If you are using Redis as cache (see Enable caching) it is recommended to use it for sessions as well:
SESSION_ENGINE = "django.contrib.sessions.backends.cache"See also
DATABASES
Connectivity to database server, please check Django’s documentation for more details.
See also
DEBUG
Disable this for any production server. With debug mode enabled, Django will show backtraces in case of error to users, when you disable it, errors will be sent per e-mail to
ADMINS(see above).Debug mode also slows down Weblate, as Django stores much more info internally in this case.
See also
DEFAULT_FROM_EMAIL
E-mail sender address for outgoing e-mail, for example registration e-mails.
See also
SECRET_KEY
Key used by Django to sign some info in cookies, see Django secret key for more info.
See also
SERVER_EMAIL
E-mail used as sender address for sending e-mails to the administrator, for example notifications on failed merges.
See also
Filling up the database¶
After your configuration is ready, you can run
migrate to create the database structure. Now you should be
able to create translation projects using the admin interface.
Once you are done, you should also check the Performance report in the admin interface, which will give you hints of potential non optimal configuration on your site.
See also
Production setup¶
For a production setup you should carry out adjustments described in the following sections. The most critical settings will trigger a warning, which is indicated by an exclamation mark in the top bar if signed in as a superuser:
It is also recommended to inspect checks triggered by Django (though you might not need to fix all of them):
weblate check --deploy
You can also review the very same checklist at Performance report in the Management interface.
See also
Disable debug mode¶
Disable Django’s debug mode (DEBUG) by:
DEBUG = False
With debug mode on, Django stores all executed queries and shows users backtraces of errors, which is not desired in a production setup.
See also
Properly configure admins¶
Set the correct admin addresses to the ADMINS setting to defining who will receive
e-mails in case something goes wrong on the server, for example:
ADMINS = (("Your Name", "[email protected]"),)
See also
Set correct site domain¶
Adjust site name and domain in the admin interface, otherwise links in RSS or
registration e-mails will not work. This is configured using
SITE_DOMAIN which should contain site domain name.
Changed in version 4.2: Prior to the 4.2 release the Django sites framework was used instead, please see The “sites” framework.
Correctly configure HTTPS¶
It is strongly recommended to run Weblate using the encrypted HTTPS protocol.
After enabling it, you should set ENABLE_HTTPS in the settings:
ENABLE_HTTPS = True
Hint
You might want to set up HSTS as well, see SSL/HTTPS for more details.
Set properly SECURE_HSTS_SECONDS¶
If your site is served over SSL, you have to consider setting a value for SECURE_HSTS_SECONDS
in the settings.py to enable HTTP Strict Transport Security.
By default it’s set to 0 as shown below.
SECURE_HSTS_SECONDS = 0
If set to a non-zero integer value, the django.middleware.security.SecurityMiddleware
sets the HTTP Strict Transport Security header on all responses that do not already have it.
Warning
Setting this incorrectly can irreversibly (for some time) break your site. Read the HTTP Strict Transport Security documentation first.
Use a powerful database engine¶
Please use PostgreSQL for a production environment, see Database setup for Weblate for more info.
Use adjacent location for running the database server, otherwise the networking performance or reliability might ruin your Weblate experience.
Check the database server performance or tweak its configuration, for example using PGTune.
Enable caching¶
If possible, use Redis from Django by adjusting the CACHES configuration
variable, for example:
CACHES = {
"default": {
"BACKEND": "django_redis.cache.RedisCache",
"LOCATION": "redis://127.0.0.1:6379/0",
# If redis is running on same host as Weblate, you might
# want to use unix sockets instead:
# 'LOCATION': 'unix:///var/run/redis/redis.sock?db=0',
"OPTIONS": {
"CLIENT_CLASS": "django_redis.client.DefaultClient",
"PARSER_CLASS": "redis.connection.HiredisParser",
},
}
}
Hint
In case you change Redis settings for the cache, you might need to adjust them for Celery as well, see Background tasks using Celery.
See also
Avatar caching¶
In addition to caching of Django, Weblate performs caching of avatars. It is recommended to use a separate, file-backed cache for this purpose:
CACHES = {
"default": {
# Default caching backend setup, see above
"BACKEND": "django_redis.cache.RedisCache",
"LOCATION": "unix:///var/run/redis/redis.sock?db=0",
"OPTIONS": {
"CLIENT_CLASS": "django_redis.client.DefaultClient",
"PARSER_CLASS": "redis.connection.HiredisParser",
},
},
"avatar": {
"BACKEND": "django.core.cache.backends.filebased.FileBasedCache",
"LOCATION": os.path.join(DATA_DIR, "avatar-cache"),
"TIMEOUT": 604800,
"OPTIONS": {
"MAX_ENTRIES": 1000,
},
},
}
Configure e-mail sending¶
Weblate needs to send out e-mails on several occasions, and these e-mails should
have a correct sender address, please configure SERVER_EMAIL and
DEFAULT_FROM_EMAIL to match your environment, for example:
SERVER_EMAIL = "[email protected]"
DEFAULT_FROM_EMAIL = "[email protected]"
Note
To disable sending e-mails by Weblate set EMAIL_BACKEND
to django.core.mail.backends.dummy.EmailBackend.
This will disable all e-mail delivery including registration or password reset e-mails.
Allowed hosts setup¶
Django requires ALLOWED_HOSTS to hold a list of domain names
your site is allowed to serve, leaving it empty will block any requests.
In case this is not configured to match your HTTP server, you will get errors
like Invalid HTTP_HOST header: '1.1.1.1'. You may need to add '1.1.1.1'
to ALLOWED_HOSTS.
Hint
On Docker container, this is available as WEBLATE_ALLOWED_HOSTS.
Django secret key¶
The SECRET_KEY setting is used by Django to sign cookies, and you should
really generate your own value rather than using the one from the example setup.
You can generate a new key using weblate-generate-secret-key shipped with Weblate.
See also
Running maintenance tasks¶
For optimal performance, it is good idea to run some maintenance tasks in the background. This is automatically done by Background tasks using Celery and covers following tasks:
Configuration health check (hourly).
Committing pending changes (hourly), see Lazy commits and
commit_pending.Updating component alerts (daily).
Update remote branches (nightly), see
AUTO_UPDATE.Translation memory backup to JSON (daily), see
dump_memory.Fulltext and database maintenance tasks (daily and weekly tasks), see
cleanuptrans.
System locales and encoding¶
The system locales should be configured to UTF-8 capable ones. On most Linux distributions this is the default setting. In case it is not the case on your system, please change locales to UTF-8 variant.
For example by editing /etc/default/locale and setting there
LANG="C.UTF-8".
In some cases the individual services have separate configuration for locales. This varies between distribution and web servers, so check documentation of your web server packages for that.
Apache on Ubuntu uses /etc/apache2/envvars:
export LANG='en_US.UTF-8'
export LC_ALL='en_US.UTF-8'
Apache on CentOS uses /etc/sysconfig/httpd (or
/opt/rh/httpd24/root/etc/sysconfig/httpd):
LANG='en_US.UTF-8'
Compressing client assets¶
Weblate comes with a bunch of JavaScript and CSS files. For performance reasons it is good to compress them before sending to a client. In default configuration this is done on the fly at cost of little overhead. On big installations, it is recommended to enable offline compression mode. This needs to be done in the configuration and the compression has to be triggered on every Weblate upgrade.
The configuration switch is simple by enabling
django.conf.settings.COMPRESS_OFFLINE and configuring
django.conf.settings.COMPRESS_OFFLINE_CONTEXT (the latter is
already included in the example configuration):
COMPRESS_OFFLINE = True
On each deploy you need to compress the files to match current version:
weblate compress
Hint
The official Docker image has this feature already enabled.
Running server¶
Hint
In case you are not experienced with services described below, you might want to try Installing using Docker.
You will need several services to run Weblate, the recommended setup consists of:
Database server (see Database setup for Weblate)
Cache server (see Enable caching)
Frontend web server for static files and SSL termination (see Serving static files)
WSGI server for dynamic content (see Sample configuration for NGINX and uWSGI)
Celery for executing background tasks (see Background tasks using Celery)
Note
There are some dependencies between the services, for example cache and database should be running when starting up Celery or uwsgi processes.
In most cases, you will run all services on single (virtual) server, but in
case your installation is heavy loaded, you can split up the services. The only
limitation on this is that Celery and Wsgi servers need access to
DATA_DIR.
Note
The WSGI process has to be executed under the same user the Celery
process, otherwise files in the DATA_DIR will be stored with
mixed ownership, leading to runtime issues.
See also Filesystem permissions and Background tasks using Celery.
Running web server¶
Running Weblate is not different from running any other Django based program. Django is usually executed as uWSGI or fcgi (see examples for different webservers below).
For testing purposes, you can use the built-in web server in Django:
weblate runserver
Warning
DO NOT USE THIS SERVER IN A PRODUCTION SETTING. It has not gone through
security audits or performance tests. See also Django documentation on
runserver.
Hint
The Django built-in server serves static files only with DEBUG
enabled as it is intended for development only. For production use, please
see WSGI setups in Sample configuration for NGINX and uWSGI, Sample configuration for Apache, Sample configuration for Apache and Gunicorn, and
Serving static files.
Serving static files¶
Django needs to collect its static files in a single directory. To do so,
execute weblate collectstatic --noinput. This will copy the static
files into a directory specified by the STATIC_ROOT setting (this defaults to
a static directory inside CACHE_DIR).
It is recommended to serve static files directly from your web server, you should use that for the following paths:
/static/Serves static files for Weblate and the admin interface (from defined by
STATIC_ROOT)./media/Used for user media uploads (e.g. screenshots).
/favicon.icoShould be rewritten to rewrite a rule to serve
/static/favicon.ico.
Content security policy¶
The default Weblate configuration enables weblate.middleware.SecurityMiddleware
middleware which sets security related HTTP headers like Content-Security-Policy
or X-XSS-Protection. These are by default set up to work with Weblate and its
configuration, but this might need customization for your environment.
Sample configuration for NGINX and uWSGI¶
To run production webserver, use the WSGI wrapper installed with Weblate (in
virtual env case it is installed as
~/weblate-env/lib/python3.9/site-packages/weblate/wsgi.py). Don’t
forget to set the Python search path to your virtualenv as well (for example
using virtualenv = /home/user/weblate-env in uWSGI).
The following configuration runs Weblate as uWSGI under the NGINX webserver.
Configuration for NGINX (also available as weblate/examples/weblate.nginx.conf):
#
# nginx configuration for Weblate
#
# You will want to change:
#
# - server_name
# - change /home/weblate/weblate-env to location where Weblate virtualenv is placed
# - change /home/weblate/data to match your DATA_DIR
# - change /home/weblate/data/cache to match your CACHE_DIR
# - change python3.12 to match your Python version
# - change weblate user to match your Weblate user
#
server {
listen 80;
server_name weblate;
# Not used
root /var/www/html;
location ~ ^/favicon.ico$ {
# CACHE_DIR/static/favicon.ico
alias /home/weblate/data/cache/static/favicon.ico;
expires 30d;
}
location /static/ {
# CACHE_DIR/static/
alias /home/weblate/data/cache/static/;
expires 30d;
}
location /media/ {
# DATA_DIR/media/
alias /home/weblate/data/media/;
expires 30d;
}
location / {
include uwsgi_params;
# Needed for long running operations in admin interface
uwsgi_read_timeout 3600;
# Adjust based to uwsgi configuration:
uwsgi_pass unix:///run/uwsgi/app/weblate/socket;
# uwsgi_pass 127.0.0.1:8080;
}
}
Configuration for uWSGI (also available as weblate/examples/weblate.uwsgi.ini):
#
# uWSGI configuration for Weblate
#
# You will want to change:
#
# - change /home/weblate/weblate-env to location where Weblate virtualenv is placed
# - change /home/weblate/data to match your DATA_DIR
# - change python3.12 to match your Python version
# - change weblate user to match your Weblate user
#
[uwsgi]
plugins = python3
master = true
protocol = uwsgi
socket = 127.0.0.1:8080
wsgi-file = /home/weblate/weblate-env/lib/python3.12/site-packages/weblate/wsgi.py
# Add path to Weblate checkout if you did not install
# Weblate by pip
# python-path = /path/to/weblate
# In case you're using virtualenv uncomment this:
virtualenv = /home/weblate/weblate-env
# Needed for OAuth/OpenID
buffer-size = 8192
# Reload when consuming too much of memory
reload-on-rss = 250
# Increase number of workers for heavily loaded sites
workers = 8
# Enable threads for Sentry error submission
enable-threads = true
# Child processes do not need file descriptors
close-on-exec = true
# Avoid default 0000 umask
umask = 0022
# Run as weblate user
uid = weblate
gid = weblate
# Enable harakiri mode (kill requests after some time)
# harakiri = 3600
# harakiri-verbose = true
# Enable uWSGI stats server
# stats = :1717
# stats-http = true
# Do not log some errors caused by client disconnects
ignore-sigpipe = true
ignore-write-errors = true
disable-write-exception = true
See also
Sample configuration for Apache¶
It is recommended to use prefork MPM when using WSGI with Weblate.
The following configuration runs Weblate as WSGI, you need to have enabled
mod_wsgi (available as weblate/examples/apache.conf):
#
# VirtualHost for Weblate
#
# You will want to change:
#
# - ServerAdmin and ServerName
# - change /home/weblate/weblate-env to location where Weblate virtualenv is placed
# - change /home/weblate/data to match your DATA_DIR
# - change /home/weblate/data/cache to match your CACHE_DIR
# - change python3.12 to match Python version mod-wsgi is compiled for
# - change weblate user to match your Weblate user
#
<VirtualHost *:80>
ServerAdmin [email protected]
ServerName weblate.example.org
# CACHE_DIR/static/favicon.ico
Alias /favicon.ico /home/weblate/data/cache/static/favicon.ico
# CACHE_DIR/static/
Alias /static/ /home/weblate/data/cache/static/
<Directory /home/weblate/data/cache/static/>
Require all granted
</Directory>
# DATA_DIR/media/
Alias /media/ /home/weblate/data/media/
<Directory /home/weblate/data/media/>
Require all granted
</Directory>
# Path to your Weblate virtualenv
WSGIDaemonProcess weblate python-home=/home/weblate/weblate-env user=weblate request-timeout=600
WSGIProcessGroup weblate
WSGIApplicationGroup %{GLOBAL}
WSGIScriptAlias / /home/weblate/weblate-env/lib/python3.12/site-packages/weblate/wsgi.py process-group=weblate
WSGIPassAuthorization On
<Directory /home/weblate/weblate-env/lib/python3.12/site-packages/weblate/>
<Files wsgi.py>
Require all granted
</Files>
</Directory>
</VirtualHost>
Note
Weblate requires Python 3, so please ensure you are running Python 3
variant of the modwsgi. Usually it is available as a separate package, for
example libapache2-mod-wsgi-py3.
Use matching Python version to install Weblate.
Sample configuration for Apache and Gunicorn¶
The following configuration runs Weblate in Gunicorn and Apache 2.4
(available as weblate/examples/apache.gunicorn.conf):
#
# VirtualHost for Weblate using gunicorn on localhost:8000
#
# You will want to change:
#
# - ServerAdmin and ServerName
# - change /home/weblate/weblate-env to location where Weblate virtualenv is placed
# - change /home/weblate/data to match your DATA_DIR
# - change /home/weblate/data/cache to match your CACHE_DIR
# - change weblate user to match your Weblate user
#
<VirtualHost *:443>
ServerAdmin [email protected]
ServerName weblate.example.org
# CACHE_DIR/static/favicon.ico
Alias /favicon.ico /home/weblate/data/cache/static/favicon.ico
# CACHE_DIR/static/
Alias /static/ /home/weblate/data/cache/static/
<Directory /home/weblate/data/cache/static/>
Require all granted
</Directory>
# DATA_DIR/media/
Alias /media/ /home/weblate/data/media/
<Directory /home/weblate/data/media/>
Require all granted
</Directory>
SSLEngine on
SSLCertificateFile /etc/apache2/ssl/https_cert.cert
SSLCertificateKeyFile /etc/apache2/ssl/https_key.pem
SSLProxyEngine On
ProxyPass /favicon.ico !
ProxyPass /static/ !
ProxyPass /media/ !
ProxyPass / http://localhost:8000/
ProxyPassReverse / http://localhost:8000/
ProxyPreserveHost On
</VirtualHost>
See also
Running Weblate under path¶
It is recommended to use prefork MPM when using WSGI with Weblate.
A sample Apache configuration to serve Weblate under /weblate. Again using
mod_wsgi (also available as weblate/examples/apache-path.conf):
# Copyright © Michal Čihař <[email protected]>
#
# SPDX-License-Identifier: GPL-3.0-or-later
#
# VirtualHost for Weblate, running under /weblate path
#
# You will want to change:
#
# - ServerAdmin and ServerName
# - change /home/weblate/weblate-env to location where Weblate virtualenv is placed
# - change /home/weblate/data to match your DATA_DIR
# - change /home/weblate/data/cache to match your CACHE_DIR
# - change python3.12 to match Python version mod-wsgi is compiled for
# - change weblate user to match your Weblate user
#
<VirtualHost *:80>
ServerAdmin [email protected]
ServerName weblate.example.org
# CACHE_DIR/static/favicon.ico
Alias /weblate/favicon.ico /home/weblate/data/cache/static/favicon.ico
# CACHE_DIR/static/
Alias /weblate/static/ /home/weblate/data/cache/static/
<Directory /home/weblate/data/cache/static/>
Require all granted
</Directory>
# DATA_DIR/media/
Alias /weblate/media/ /home/weblate/data/media/
<Directory /home/weblate/data/media/>
Require all granted
</Directory>
# Path to your Weblate virtualenv
WSGIDaemonProcess weblate python-home=/home/weblate/weblate-env user=weblate request-timeout=600
WSGIProcessGroup weblate
WSGIApplicationGroup %{GLOBAL}
WSGIScriptAlias /weblate /home/weblate/weblate-env/lib/python3.12/site-packages/weblate/wsgi.py process-group=weblate
WSGIPassAuthorization On
<Directory /home/weblate/weblate-env/lib/python3.12/site-packages/weblate/>
<Files wsgi.py>
Require all granted
</Files>
</Directory>
</VirtualHost>
Additionally, you will have to adjust weblate/settings.py:
URL_PREFIX = "/weblate"
Background tasks using Celery¶
Weblate uses Celery to execute regular and background tasks. You are supposed to run a Celery service that will execute these. For example, it is responsible for handling following operations (this list is not complete):
Receiving webhooks from external services (see Notification hooks).
Running regular maintenance tasks such as backups, cleanups, daily add-ons, or updates (see Backing up and moving Weblate,
BACKGROUND_TASKS, Add-ons).Running Automatic translation.
Sending digest notifications.
Offloading expensive operations from the WSGI process.
Committing pending changes (see Lazy commits).
A typical setup using Redis as a backend looks like this:
CELERY_TASK_ALWAYS_EAGER = False
CELERY_BROKER_URL = "redis://localhost:6379"
CELERY_RESULT_BACKEND = CELERY_BROKER_URL
See also
You should also start the Celery worker to process the tasks and start scheduled tasks, this can be done directly on the command-line (which is mostly useful when debugging or developing):
./weblate/examples/celery start
./weblate/examples/celery stop
Note
The Celery process has to be executed under the same user as the WSGI
process, otherwise files in the DATA_DIR will be stored with
mixed ownership, leading to runtime issues.
See also Filesystem permissions and Running server.
Executing Celery tasks in the WSGI using eager mode¶
Note
This will have severe performance impact on the web interface, and will break features depending on regular trigger (for example committing pending changes, digest notifications, or backups).
For development, you might want to use eager configuration, which does process all tasks in place:
CELERY_TASK_ALWAYS_EAGER = True
CELERY_BROKER_URL = "memory://"
CELERY_TASK_EAGER_PROPAGATES = True
Running Celery as system service¶
Most likely you will want to run Celery as a daemon and that is covered by
Daemonization. For the most common Linux setup using
systemd, you can use the example files shipped in the examples folder
listed below.
Systemd unit to be placed as /etc/systemd/system/celery-weblate.service:
[Unit]
Description=Celery Service (Weblate)
After=network.target
[Service]
Type=forking
User=weblate
Group=weblate
EnvironmentFile=/etc/default/celery-weblate
WorkingDirectory=/home/weblate
RuntimeDirectory=celery
RuntimeDirectoryPreserve=restart
LogsDirectory=celery
ExecStart=/bin/sh -c '${CELERY_BIN} multi start ${CELERYD_NODES} \
-A ${CELERY_APP} --pidfile=${CELERYD_PID_FILE} \
--logfile=${CELERYD_LOG_FILE} --loglevel=${CELERYD_LOG_LEVEL} ${CELERYD_OPTS}'
ExecStop=/bin/sh -c '${CELERY_BIN} multi stopwait ${CELERYD_NODES} \
--pidfile=${CELERYD_PID_FILE}'
ExecReload=/bin/sh -c '${CELERY_BIN} multi restart ${CELERYD_NODES} \
-A ${CELERY_APP} --pidfile=${CELERYD_PID_FILE} \
--logfile=${CELERYD_LOG_FILE} --loglevel=${CELERYD_LOG_LEVEL} ${CELERYD_OPTS}'
[Install]
WantedBy=multi-user.target
Environment configuration to be placed as /etc/default/celery-weblate:
# Name of nodes to start
CELERYD_NODES="celery notify memory backup translate"
# Absolute or relative path to the 'celery' command:
CELERY_BIN="/home/weblate/weblate-env/bin/celery"
# App instance to use
# comment out this line if you don't use an app
CELERY_APP="weblate.utils"
# Extra command-line arguments to the worker,
# increase concurrency if you get weblate.E019
CELERYD_OPTS="--beat:celery --queues:celery=celery --prefetch-multiplier:celery=4 \
--queues:notify=notify --prefetch-multiplier:notify=10 \
--queues:memory=memory --prefetch-multiplier:memory=10 \
--queues:translate=translate --prefetch-multiplier:translate=4 \
--concurrency:backup=1 --queues:backup=backup --prefetch-multiplier:backup=2"
# Logging configuration
# - %n will be replaced with the first part of the nodename.
# - %I will be replaced with the current child process index
# and is important when using the prefork pool to avoid race conditions.
CELERYD_PID_FILE="/run/celery/weblate-%n.pid"
CELERYD_LOG_FILE="/var/log/celery/weblate-%n%I.log"
CELERYD_LOG_LEVEL="INFO"
Additional configuration to rotate Celery logs using logrotate to be
placed as /etc/logrotate.d/celery:
# Copyright © Michal Čihař <[email protected]>
#
# SPDX-License-Identifier: GPL-3.0-or-later
/var/log/celery/*.log {
weekly
missingok
rotate 12
compress
notifempty
}
Periodic tasks using Celery beat¶
Weblate comes with built-in setup for scheduled tasks. You can however define
additional tasks in settings.py, for example see Lazy commits.
The tasks are supposed to be executed by Celery beats daemon. In case it is not working properly, it might not be running or its database was corrupted. Check the Celery startup logs in such case to figure out root cause.
Monitoring Celery status¶
You can find current length of the Celery task queues in the
Management interface or you can use celery_queues on the
command-line. In case the queue will get too long, you will also get
configuration error in the admin interface.
Warning
The Celery errors are by default only logged into Celery log and are not visible to user. In case you want to have overview on such failures, it is recommended to configure Collecting error reports and monitoring performance.
Single-process Celery setup¶
In case you have very limited memory, you might want to reduce number of Weblate processes. All Celery tasks can be executed in a single process using:
celery --app=weblate.utils worker --beat --queues=celery,notify,memory,translate,backup --pool=solo
An installation using Docker can be configured to use a single-process Celery setup by setting CELERY_SINGLE_PROCESS.
Warning
This will have a noticeable performance impact on Weblate.
Monitoring Weblate¶
Weblate provides the /healthz/ URL to be used in simple health checks, for example
using Kubernetes. The Docker container has built-in health check using this URL.
For monitoring metrics of Weblate you can use GET /api/metrics/ API endpoint.
Collecting error reports and monitoring performance¶
Weblate, as any other software, can fail. In order to collect useful failure states we recommend to use third party services to collect such information. This is especially useful in case of failing Celery tasks, which would otherwise only report error to the logs and you won’t get notified on them. Weblate has support for the following services:
Sentry¶
Weblate has built-in support for Sentry. To use
it, it’s enough to set SENTRY_DSN in the settings.py:
SENTRY_DSN = "https://[email protected]/"
Sentry can be also used to monitor performance of Weblate by collecting traces
and profiles for defined percentage of operations. This can be configured using
SENTRY_TRACES_SAMPLE_RATE and SENTRY_PROFILES_SAMPLE_RATE.
Rollbar¶
Weblate has built-in support for Rollbar. To use it, it’s enough to follow instructions for Rollbar notifier for Python.
In short, you need to adjust settings.py:
# Add rollbar as last middleware:
MIDDLEWARE = [
# … other middleware classes …
"rollbar.contrib.django.middleware.RollbarNotifierMiddleware",
]
# Configure client access
ROLLBAR = {
"access_token": "POST_SERVER_ITEM_ACCESS_TOKEN",
"environment": "development" if DEBUG else "production",
"branch": "main",
"root": "/absolute/path/to/code/root",
}
Everything else is integrated automatically, you will now collect both server and client side errors.
Note
Error logging also includes exceptions that were gracefully handled, but might indicate a problem - such as failed parsing of an uploaded file.
Migrating Weblate to another server¶
Migrating Weblate to another server should be pretty easy, however it stores data in few locations which you should migrate carefully. The best approach is to stop Weblate for the migration.
Migrating database¶
Depending on your database backend, you might have several options to migrate the database. The most straightforward approach is to use database native tools, as they are usually the most effective (e.g. mysqldump or pg_dump). Alternatively you can use replication in case your database supports it.
See also
Migrating between databases described in Migrating from other databases to PostgreSQL.
Migrating VCS repositories¶
The VCS repositories stored under DATA_DIR need to be migrated as
well. You can simply copy them or use rsync to do the migration
more effectively.
Other notes¶
Don’t forget to move other services Weblate might have been using like Redis, Cron jobs or custom authentication backends.